Which of these can change the food webs within an ecosystem? New species moving into that ecosystem An animal going extinct within an ecosystem Destruction of trees and planto within an ecosystem All of the choices can change a food web within an ecosystem

## Step 1<br />The problem is asking us to identify which of the given options can change the food webs within an ecosystem. A food web is a system of interconnected food chains within an ecosystem, where each species feeds on the next species in the chain.<br /><br />## Step 2<br />The first option is "New species moving into that ecosystem". This can indeed change the food web. The new species could either become a predator or a prey, which would alter the existing food web.<br /><br />## Step 3<br />The second option is "An animal going extinct within an ecosystem". This can also change the food web. If a species goes extinct, it can disrupt the balance of the food web, as other species that relied on it for food may struggle to survive.<br /><br />## Step 4<br />The third option is "Destruction of trees and plants within an ecosystem". This can also change the food web. Trees and plants are primary producers in most ecosystems, providing food for herbivores. If they are destroyed, it can disrupt the food web, as herbivores lose their food source.<br /><br />## Step 5<br />Given that all the options can change the food web within an ecosystem, the correct answer is "All of the choices can change a food web within an ecosystem".